WO2009145548A3 - Unité de rétroéclairage à del et dispositif d’affichage à cristaux liquides utilisant l’unité - Google Patents

Unité de rétroéclairage à del et dispositif d’affichage à cristaux liquides utilisant l’unité Download PDF

Info

Publication number
WO2009145548A3
WO2009145548A3 PCT/KR2009/002782 KR2009002782W WO2009145548A3 WO 2009145548 A3 WO2009145548 A3 WO 2009145548A3 KR 2009002782 W KR2009002782 W KR 2009002782W WO 2009145548 A3 WO2009145548 A3 WO 2009145548A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
led back
light unit
liquid crystal
display device
Prior art date
Application number
PCT/KR2009/002782
Other languages
English (en)
Other versions
WO2009145548A2 (fr
Inventor
Seung Choon Bae
Seung Se Kim
Hoon Hur
Original Assignee
Lg Electronics Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080049146A external-priority patent/KR101100215B1/ko
Priority claimed from KR1020080061487A external-priority patent/KR20100001545A/ko
Priority claimed from KR1020080099569A external-priority patent/KR101100216B1/ko
Priority claimed from KR1020090035029A external-priority patent/KR101559791B1/ko
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to EP09755013.1A priority Critical patent/EP2288957B1/fr
Priority to CN200980119677.4A priority patent/CN102047174B/zh
Publication of WO2009145548A2 publication Critical patent/WO2009145548A2/fr
Publication of WO2009145548A3 publication Critical patent/WO2009145548A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0078—Side-by-side arrangements, e.g. for large area displays
    • G02B6/008—Side-by-side arrangements, e.g. for large area displays of the partially overlapping type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L’invention concerne une unité de rétroéclairage à DEL et d'autres dispositifs utilisant l’unité de rétroéclairage à DEL. Selon un mode de réalisation, une unité de rétroéclairage à DEL comporte une partie guide d’ondes optiques qui comprend une plaque de guide d’ondes optiques et une plaque de réflexion couplée à la plaque de guide d’ondes optiques. La plaque de guide d’ondes optiques a une partie entrée de lumière et une première partie connexion tandis que la plaque de réflexion a une deuxième partie connexion connectée à la première partie connexion et une source lumineuse comprenant au moins une diode électroluminescente, la source lumineuse émettant de la lumière en direction de la partie guide d’ondes optiques.
PCT/KR2009/002782 2008-05-27 2009-05-26 Unité de rétroéclairage à del et dispositif d’affichage à cristaux liquides utilisant l’unité WO2009145548A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09755013.1A EP2288957B1 (fr) 2008-05-27 2009-05-26 Unité de rétroéclairage à del et dispositif d affichage à cristaux liquides utilisant l unité
CN200980119677.4A CN102047174B (zh) 2008-05-27 2009-05-26 Led背光单元以及使用该led背光单元的液晶显示装置

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR10-2008-0049146 2008-05-27
KR1020080049146A KR101100215B1 (ko) 2008-05-27 2008-05-27 도광판 모듈 및 이를 이용한 백라이트 유닛
KR1020080061487A KR20100001545A (ko) 2008-06-27 2008-06-27 디스플레이용 백라이트 유닛
KR10-2008-0061487 2008-06-27
KR1020080099569A KR101100216B1 (ko) 2008-10-10 2008-10-10 디스플레이용 백라이트 유닛
KR10-2008-0099569 2008-10-10
KR10-2009-0035029 2009-04-22
KR1020090035029A KR101559791B1 (ko) 2009-04-22 2009-04-22 백라이트 유닛

Publications (2)

Publication Number Publication Date
WO2009145548A2 WO2009145548A2 (fr) 2009-12-03
WO2009145548A3 true WO2009145548A3 (fr) 2010-03-04

Family

ID=41377771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/002782 WO2009145548A2 (fr) 2008-05-27 2009-05-26 Unité de rétroéclairage à del et dispositif d’affichage à cristaux liquides utilisant l’unité

Country Status (4)

Country Link
US (2) US8189135B2 (fr)
EP (1) EP2288957B1 (fr)
CN (1) CN102047174B (fr)
WO (1) WO2009145548A2 (fr)

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CN102047174A (zh) 2011-05-04
US20100053506A1 (en) 2010-03-04
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